Ключевые слова: active, alert, atom, atomic, attention, beware, biohazard, black, bomb, button, caution, character, chemistry, danger, dangerous, death, denied, design, energy, environment, hazard, hazardous, hazmat, icon, illustration, industry, ionizing, isolated, materials, neutron, nuclear, placard, power, protection, radiation, radioactive, radioactivity, ray, red, risk, safety, science, script, shape, sign, symbol, technology, text, toxic, triangle, uranium, warning, white, word, x ray, x rays, yellow,